| 某高超飞行器流道冷流特征及气动力特性研究 |
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| 引用本文： | 张红英,程克明,伍贻兆.某高超飞行器流道冷流特征及气动力特性研究[J].空气动力学学报,2009,27(1). |
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| 作者姓名： | 张红英 程克明 伍贻兆 |
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| 作者单位： | 南京航空航天大学,高超气动研究中心,HARC,江苏,南京,210016 |
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| 摘 要： | 对一种类似于X-43A的吸气式高超声速一体化构形全流道开展了风洞实验和数值模拟研究,分析了不同来流总压、飞行攻角以来流Ma数下全流道的流场结构和气动力特性.研究结果表明:(1)飞行攻角对全流道的流动结构和升力系数有着显著影响,但阻力系数的影响并不明显;(2) 研究范围内来流马赫数的变化对全流道的流动结构和全机气动力特性有着一定影响;(3) 前体横截面上存在显著的展向压强梯度,使得经过预压缩的气流偏离了进气道进口,但同时也减少了进入内通道的边界层气流,提高了进口流场的品质.
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| 关 键 词： | 吸气式高超声速飞行器 全流道 气动力特性 飞行攻角 来流马赫数 |
A study on the flowpath and the aerodynamic characteristic of a hypersonic vehicle |
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| ZHANG Hong-ying,CHENG Ke-ming,WU Yi-zhao.A study on the flowpath and the aerodynamic characteristic of a hypersonic vehicle[J].Acta Aerodynamica Sinica,2009,27(1). |
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| Authors: | ZHANG Hong-ying CHENG Ke-ming WU Yi-zhao |
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| Institution: | Hypersonic Aerodynamics Research Center;Nanjing University of Aeronautics and Astronautics;Nanjing 210016;China |
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| Abstract: | Using the combined experiments and Computational Fluid Dynamics(CFD),a study is carried out to investigate the aerodynamic characteristics and the flowpath of a hypersonic vehicle like X43-A.Results indicate:(1) Despite the fact that the drag coefficient is not sensitive to the change of the angle of attack,the lift coefficient and the flow structure of the full flowpath is highly affected.(2) With the increase of the free stream Mach number,the Full Flowpath and the Aerodynamic Characteristic fluctuate tho... |
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| Keywords: | hypersonic vehicle full flowpath lift coefficient drag coefficient free stream Mach number |
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